Improvement in knife-scouring machines



C. G. SINGER Knife-Securing Machine.

WITNESSES- MFEIEIKS, FNOTO LITNOGRAPHER. WASHINGTON. D c.

CHRISTIAN G. SINGER, OF PENNVILLE, PENNSYLVANIA.

IMPROVEMENT IN KNIFE-SCCURING MACHINES.

Specification forming part of Letters Patent No. 167,200, dated August31, 1875; application filed July 27, 1875.

crank-handle and cogged gearing, for the purpose of scouring andpolishing knives, 850.,

with ease and dispatch.

The accompanying drawings illustrate the construction and operation ofthe same, which, with the letters of reference marked thereon and abrief explanation, will enable those skilled in the art to make and usethe device, and in which drawings Figure 1 is a perspective view of thecoveringplate and gearing. Fig. 2 shows the flanged box open, with therubber, 850., in place. Fig. 3 is a side elevation. Fig. 4 illustratesthe rubber or buffer.

The covering-plate B on one side forms a cover for the flanged box A.The lower end of B has projecting flanges G D, to embrace the edge of atable, and a binding-screw, E, as in common use. The box portion A has araised flange, say two inches wide, with a splice-section on oneside','that can be removed by withdrawing the upper screw-bolt I. Partof the bearing for the shaft 1?. of the rubber N is made in saidsegment, the other half in the fixed portion of the box A, for thepurpose of removing the rubber and its shaft, to which the pinion G iskeyed, and made removable also. This flange is curved over, to allow therubber to revolve freely. There is a flange-lip or open space, throughwhich the blade of the knife or the like is inserted. The flange aboveon one side is narrowed, and extends down and around the edges of thecovering-plate B, simply to give it strength in the casting and a betterfinish. There is a cogged wheel, F, with a handle, H, at-

tached, as shown, which wheel drivesthe pinion G on the rubber-shaft a.This rubber hub or shell N is closed at the ends, embracing the shaftwhich revolves it, and is provided with stout wires or rods, 0, at twoor more points, and longitudinal slots across said shell, be it oval orcylindrical in form. The rubbers or buffers P, made of leather, felting,or any desired material or number of pieces, are inserted through theslots, and around the rods 0, and brought out again, and trimmed inlength to adapt them to the case.

There is a flat bearing or spring, L, attached to the inner side of thestraight flange forming the scouring-box A. This spring is madeadjustable by a setscrew, K.

The operation will be readily understood on simple inspection. Fig. 2shows a knifeblade, M, inserted into the box, between the edges'of therubbers I and spring L. These rubbers, provided with sand, emery, oranyscouring or polishing material, being rapidly rotated, aided by thepressure of the springplate L, will speedily produce the desired eii'ectwith ease.

I am aware that polishing devices and knifescouring machines are used ofvarious forms, such as Patent No. 48,755, 1865, in which two wheels withintermediate rubbers are revolved by a handle; but I am not aware of anydesigned and constructed substantially as herein specified, in thearrangement and operation, and manner of clamping to a table as a Whole.Therefore,

What I claim as my invention is- The combination of the flanged box Awith the rubbers P in a slotted hub, N, pinion G, spring or hearingplate L, set-screw K, supported by the covering-plate B, which isprovided with ledges O D and binding-screw E, gearing I G, the wholeconstructed and arranged as and for the purpose specified.

CHRISTIAN G. SINGER.

Witnesses WM. B. WILEY, JACOB STAUFFER.

FFICE.

